src/element.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007-2010  Intel Corporation. All rights reserved.
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License version 2 as
   9  *  published by the Free Software Foundation.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19  *
  20  */
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <errno.h>
  27 #include <stdarg.h>
  28 #include <string.h>
  29
  30 #include <glib.h>
  31 #include <gdbus.h>
  32
  33 #include "connman.h"
  34
  35 static DBusConnection *connection;
  36
  37 static GNode *element_root = NULL;
  38 static GSList *driver_list = NULL;
  39 static gchar **device_filter = NULL;
  40 static gchar **nodevice_filter = NULL;
  41
  42 static gboolean started = FALSE;
  43
  44 static const char *type2string(enum connman_element_type type)
  45 {
  46         switch (type) {
  47         case CONNMAN_ELEMENT_TYPE_UNKNOWN:
  48                 return "unknown";
  49         case CONNMAN_ELEMENT_TYPE_ROOT:
  50                 return "root";
  51         case CONNMAN_ELEMENT_TYPE_PROFILE:
  52                 return "profile";
  53         case CONNMAN_ELEMENT_TYPE_DEVICE:
  54                 return "device";
  55         case CONNMAN_ELEMENT_TYPE_NETWORK:
  56                 return "network";
  57         case CONNMAN_ELEMENT_TYPE_SERVICE:
  58                 return "service";
  59         case CONNMAN_ELEMENT_TYPE_IPV4:
  60                 return "ipv4";
  61         case CONNMAN_ELEMENT_TYPE_IPV6:
  62                 return "ipv6";
  63         case CONNMAN_ELEMENT_TYPE_DHCP:
  64                 return "dhcp";
  65         case CONNMAN_ELEMENT_TYPE_BOOTP:
  66                 return "bootp";
  67         case CONNMAN_ELEMENT_TYPE_ZEROCONF:
  68                 return "zeroconf";
  69         case CONNMAN_ELEMENT_TYPE_CONNECTION:
  70                 return "connection";
  71         case CONNMAN_ELEMENT_TYPE_VENDOR:
  72                 return "vendor";
  73         }
  74
  75         return NULL;
  76 }
  77
  78 struct foreach_data {
  79         enum connman_element_type type;
  80         element_cb_t callback;
  81         gpointer user_data;
  82 };
  83
  84 static gboolean foreach_callback(GNode *node, gpointer user_data)
  85 {
  86         struct connman_element *element = node->data;
  87         struct foreach_data *data = user_data;
  88
  89         DBG("element %p name %s", element, element->name);
  90
  91         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
  92                 return FALSE;
  93
  94         if (data->type != CONNMAN_ELEMENT_TYPE_UNKNOWN &&
  95                                         data->type != element->type)
  96                 return FALSE;
  97
  98         if (data->callback)
  99                 data->callback(element, data->user_data);
 100
 101         return FALSE;
 102 }
 103
 104 void __connman_element_foreach(struct connman_element *element,
 105                                 enum connman_element_type type,
 106                                 element_cb_t callback, gpointer user_data)
 107 {
 108         struct foreach_data data = { type, callback, user_data };
 109         GNode *node;
 110
 111         DBG("");
 112
 113         if (element != NULL) {
 114                 node = g_node_find(element_root, G_PRE_ORDER,
 115                                                 G_TRAVERSE_ALL, element);
 116                 if (node == NULL)
 117                         return;
 118         } else
 119                 node = element_root;
 120
 121         g_node_traverse(node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 122                                                 foreach_callback, &data);
 123 }
 124
 125 struct append_filter {
 126         enum connman_element_type type;
 127         DBusMessageIter *iter;
 128 };
 129
 130 static gboolean append_path(GNode *node, gpointer user_data)
 131 {
 132         struct connman_element *element = node->data;
 133         struct append_filter *filter = user_data;
 134
 135         DBG("element %p name %s", element, element->name);
 136
 137         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 138                 return FALSE;
 139
 140         if (filter->type != CONNMAN_ELEMENT_TYPE_UNKNOWN &&
 141                                         filter->type != element->type)
 142                 return FALSE;
 143
 144         if (filter->type == CONNMAN_ELEMENT_TYPE_DEVICE &&
 145                         __connman_device_has_driver(element->device) == FALSE)
 146                 return FALSE;
 147
 148         if (filter->type == CONNMAN_ELEMENT_TYPE_NETWORK &&
 149                         __connman_network_has_driver(element->network) == FALSE)
 150                 return FALSE;
 151
 152         dbus_message_iter_append_basic(filter->iter,
 153                                 DBUS_TYPE_OBJECT_PATH, &element->path);
 154
 155         return FALSE;
 156 }
 157
 158 void __connman_element_list(struct connman_element *element,
 159                                         enum connman_element_type type,
 160                                                         DBusMessageIter *iter)
 161 {
 162         struct append_filter filter = { type, iter };
 163         GNode *node;
 164
 165         DBG("");
 166
 167         if (element != NULL) {
 168                 node = g_node_find(element_root, G_PRE_ORDER,
 169                                                 G_TRAVERSE_ALL, element);
 170                 if (node == NULL)
 171                         return;
 172         } else
 173                 node = element_root;
 174
 175         g_node_traverse(node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
 176                                                 append_path, &filter);
 177 }
 178
 179 static struct connman_network *get_network(struct connman_element *element)
 180 {
 181         if (element->type == CONNMAN_ELEMENT_TYPE_NETWORK &&
 182                                                 element->network != NULL)
 183                 return element->network;
 184
 185         if (element->parent == NULL)
 186                 return NULL;
 187
 188         return get_network(element->parent);
 189 }
 190
 191 struct connman_service *__connman_element_get_service(struct connman_element *element)
 192 {
 193         struct connman_service *service = NULL;
 194         struct connman_network *network;
 195         struct connman_device *device;
 196         enum connman_device_type type;
 197
 198         device = __connman_element_get_device(element);
 199         if (device == NULL)
 200                 return NULL;
 201
 202         type = connman_device_get_type(device);
 203
 204         switch (type) {
 205         case CONNMAN_DEVICE_TYPE_UNKNOWN:
 206         case CONNMAN_DEVICE_TYPE_VENDOR:
 207         case CONNMAN_DEVICE_TYPE_GPS:
 208                 break;
 209         case CONNMAN_DEVICE_TYPE_ETHERNET:
 210         case CONNMAN_DEVICE_TYPE_WIFI:
 211         case CONNMAN_DEVICE_TYPE_WIMAX:
 212         case CONNMAN_DEVICE_TYPE_BLUETOOTH:
 213         case CONNMAN_DEVICE_TYPE_CELLULAR:
 214                 network = get_network(element);
 215                 if (network == NULL)
 216                         return NULL;
 217                 service = __connman_service_lookup_from_network(network);
 218                 break;
 219         }
 220
 221         return service;
 222 }
 223
 224 struct connman_device *__connman_element_get_device(struct connman_element *element)
 225 {
 226         if (element->type == CONNMAN_ELEMENT_TYPE_DEVICE &&
 227                                                 element->device != NULL)
 228                 return element->device;
 229
 230         if (element->parent == NULL)
 231                 return NULL;
 232
 233         return __connman_element_get_device(element->parent);
 234 }
 235
 236 struct find_data {
 237         enum connman_service_type type;
 238         struct connman_device *device;
 239         connman_bool_t error;
 240 };
 241
 242 static gboolean find_device(GNode *node, gpointer user_data)
 243 {
 244         struct connman_element *element = node->data;
 245         struct find_data *data = user_data;
 246
 247         if (element->type != CONNMAN_ELEMENT_TYPE_DEVICE)
 248                 return FALSE;
 249
 250         if (element->device == NULL)
 251                 return FALSE;
 252
 253         if (data->type != __connman_device_get_service_type(element->device))
 254                 return FALSE;
 255
 256         data->device = element->device;
 257
 258         return TRUE;
 259 }
 260
 261 struct connman_device *__connman_element_find_device(enum connman_service_type type)
 262 {
 263         struct find_data data = { .type = type, .device = NULL };
 264
 265         g_node_traverse(element_root, G_PRE_ORDER,
 266                                 G_TRAVERSE_ALL, -1, find_device, &data);
 267
 268         return data.device;
 269 }
 270
 271 static gboolean request_scan(GNode *node, gpointer user_data)
 272 {
 273         struct connman_element *element = node->data;
 274         struct find_data *data = user_data;
 275         enum connman_service_type type;
 276
 277         if (element->type != CONNMAN_ELEMENT_TYPE_DEVICE)
 278                 return FALSE;
 279
 280         if (element->device == NULL)
 281                 return FALSE;
 282
 283         type = __connman_device_get_service_type(element->device);
 284
 285         switch (type) {
 286         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 287         case CONNMAN_SERVICE_TYPE_SYSTEM:
 288         case CONNMAN_SERVICE_TYPE_ETHERNET:
 289         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 290         case CONNMAN_SERVICE_TYPE_CELLULAR:
 291         case CONNMAN_SERVICE_TYPE_GPS:
 292         case CONNMAN_SERVICE_TYPE_VPN:
 293                 return FALSE;
 294         case CONNMAN_SERVICE_TYPE_WIFI:
 295         case CONNMAN_SERVICE_TYPE_WIMAX:
 296                 if (data->type != CONNMAN_SERVICE_TYPE_UNKNOWN &&
 297                                                         data->type != type)
 298                         return FALSE;
 299                 break;
 300         }
 301
 302         __connman_device_scan(element->device);
 303
 304         return FALSE;
 305 }
 306
 307 int __connman_element_request_scan(enum connman_service_type type)
 308 {
 309         struct find_data data = { .type = type, .device = NULL };
 310
 311         g_node_traverse(element_root, G_PRE_ORDER,
 312                                 G_TRAVERSE_ALL, -1, request_scan, &data);
 313
 314         return 0;
 315 }
 316
 317 static gboolean enable_technology(GNode *node, gpointer user_data)
 318 {
 319         struct connman_element *element = node->data;
 320         struct find_data *data = user_data;
 321         enum connman_service_type type;
 322         int err;
 323
 324         if (element->type != CONNMAN_ELEMENT_TYPE_DEVICE)
 325                 return FALSE;
 326
 327         if (element->device == NULL)
 328                 return FALSE;
 329
 330         type = __connman_device_get_service_type(element->device);
 331
 332         switch (type) {
 333         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 334         case CONNMAN_SERVICE_TYPE_SYSTEM:
 335         case CONNMAN_SERVICE_TYPE_GPS:
 336         case CONNMAN_SERVICE_TYPE_VPN:
 337                 return FALSE;
 338         case CONNMAN_SERVICE_TYPE_ETHERNET:
 339         case CONNMAN_SERVICE_TYPE_WIFI:
 340         case CONNMAN_SERVICE_TYPE_WIMAX:
 341         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 342         case CONNMAN_SERVICE_TYPE_CELLULAR:
 343                 if (data->type != CONNMAN_SERVICE_TYPE_UNKNOWN &&
 344                                                         data->type != type)
 345                         return FALSE;
 346                 break;
 347         }
 348
 349         err = __connman_device_enable_persistent(element->device);
 350         if (err == 0 || (err < 0 && err == -EINPROGRESS))
 351                 data->error = FALSE;
 352
 353         return FALSE;
 354 }
 355
 356 int __connman_element_enable_technology(enum connman_service_type type)
 357 {
 358         struct find_data data = { .type = type, .device = NULL, .error = TRUE };
 359
 360         g_node_traverse(element_root, G_PRE_ORDER,
 361                                 G_TRAVERSE_ALL, -1, enable_technology, &data);
 362
 363         if (data.error == TRUE)
 364                 return -ENODEV;
 365
 366         return 0;
 367 }
 368
 369 static gboolean disable_technology(GNode *node, gpointer user_data)
 370 {
 371         struct connman_element *element = node->data;
 372         struct find_data *data = user_data;
 373         enum connman_service_type type;
 374         int err;
 375
 376         if (element->type != CONNMAN_ELEMENT_TYPE_DEVICE)
 377                 return FALSE;
 378
 379         if (element->device == NULL)
 380                 return FALSE;
 381
 382         type = __connman_device_get_service_type(element->device);
 383
 384         switch (type) {
 385         case CONNMAN_SERVICE_TYPE_UNKNOWN:
 386         case CONNMAN_SERVICE_TYPE_SYSTEM:
 387         case CONNMAN_SERVICE_TYPE_GPS:
 388         case CONNMAN_SERVICE_TYPE_VPN:
 389                 return FALSE;
 390         case CONNMAN_SERVICE_TYPE_ETHERNET:
 391         case CONNMAN_SERVICE_TYPE_WIFI:
 392         case CONNMAN_SERVICE_TYPE_WIMAX:
 393         case CONNMAN_SERVICE_TYPE_BLUETOOTH:
 394         case CONNMAN_SERVICE_TYPE_CELLULAR:
 395                 if (data->type != CONNMAN_SERVICE_TYPE_UNKNOWN &&
 396                                                         data->type != type)
 397                         return FALSE;
 398                 break;
 399         }
 400
 401         err = __connman_device_disable_persistent(element->device);
 402         if (err == 0 || (err < 0 && err == -EINPROGRESS))
 403                 data->error = FALSE;
 404
 405         return FALSE;
 406 }
 407
 408 int __connman_element_disable_technology(enum connman_service_type type)
 409 {
 410         struct find_data data = { .type = type, .device = NULL, .error = TRUE };
 411
 412         g_node_traverse(element_root, G_PRE_ORDER,
 413                                 G_TRAVERSE_ALL, -1, disable_technology, &data);
 414
 415         if (data.error == TRUE)
 416                 return -ENODEV;
 417
 418         return 0;
 419 }
 420
 421 static gint compare_priority(gconstpointer a, gconstpointer b)
 422 {
 423         const struct connman_driver *driver1 = a;
 424         const struct connman_driver *driver2 = b;
 425
 426         return driver2->priority - driver1->priority;
 427 }
 428
 429 static gboolean match_driver(struct connman_element *element,
 430                                         struct connman_driver *driver)
 431 {
 432         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 433                 return FALSE;
 434
 435         if (element->type == driver->type ||
 436                         driver->type == CONNMAN_ELEMENT_TYPE_UNKNOWN)
 437                 return TRUE;
 438
 439         return FALSE;
 440 }
 441
 442 static gboolean probe_driver(GNode *node, gpointer data)
 443 {
 444         struct connman_element *element = node->data;
 445         struct connman_driver *driver = data;
 446
 447         DBG("element %p name %s", element, element->name);
 448
 449         if (!element->driver && match_driver(element, driver) == TRUE) {
 450                 if (driver->probe(element) < 0)
 451                         return FALSE;
 452
 453                 element->driver = driver;
 454         }
 455
 456         return FALSE;
 457 }
 458
 459 void __connman_driver_rescan(struct connman_driver *driver)
 460 {
 461         DBG("driver %p name %s", driver, driver->name);
 462
 463         if (!driver->probe)
 464                 return;
 465
 466         if (element_root != NULL)
 467                 g_node_traverse(element_root, G_PRE_ORDER,
 468                                 G_TRAVERSE_ALL, -1, probe_driver, driver);
 469 }
 470
 471 /**
 472  * connman_driver_register:
 473  * @driver: driver definition
 474  *
 475  * Register a new driver
 476  *
 477  * Returns: %0 on success
 478  */
 479 int connman_driver_register(struct connman_driver *driver)
 480 {
 481         DBG("driver %p name %s", driver, driver->name);
 482
 483         if (driver->type == CONNMAN_ELEMENT_TYPE_ROOT)
 484                 return -EINVAL;
 485
 486         if (!driver->probe)
 487                 return -EINVAL;
 488
 489         driver_list = g_slist_insert_sorted(driver_list, driver,
 490                                                         compare_priority);
 491
 492         if (started == FALSE)
 493                 return 0;
 494
 495         if (element_root != NULL)
 496                 g_node_traverse(element_root, G_PRE_ORDER,
 497                                 G_TRAVERSE_ALL, -1, probe_driver, driver);
 498
 499         return 0;
 500 }
 501
 502 static gboolean remove_driver(GNode *node, gpointer data)
 503 {
 504         struct connman_element *element = node->data;
 505         struct connman_driver *driver = data;
 506
 507         DBG("element %p name %s", element, element->name);
 508
 509         if (element->driver == driver) {
 510                 if (driver->remove)
 511                         driver->remove(element);
 512
 513                 element->driver = NULL;
 514         }
 515
 516         return FALSE;
 517 }
 518
 519 /**
 520  * connman_driver_unregister:
 521  * @driver: driver definition
 522  *
 523  * Remove a previously registered driver
 524  */
 525 void connman_driver_unregister(struct connman_driver *driver)
 526 {
 527         DBG("driver %p name %s", driver, driver->name);
 528
 529         driver_list = g_slist_remove(driver_list, driver);
 530
 531         if (element_root != NULL)
 532                 g_node_traverse(element_root, G_POST_ORDER,
 533                                 G_TRAVERSE_ALL, -1, remove_driver, driver);
 534 }
 535
 536 static void unregister_property(gpointer data)
 537 {
 538         struct connman_property *property = data;
 539
 540         DBG("property %p", property);
 541
 542         g_free(property->value);
 543         g_free(property);
 544 }
 545
 546 static void unregister_child(gpointer data)
 547 {
 548         struct connman_element *element = data;
 549
 550         DBG("element %p", element);
 551
 552         connman_element_unref(element);
 553 }
 554
 555 void __connman_element_initialize(struct connman_element *element)
 556 {
 557         DBG("element %p", element);
 558
 559         element->refcount = 1;
 560
 561         element->name    = NULL;
 562         element->type    = CONNMAN_ELEMENT_TYPE_UNKNOWN;
 563         element->state   = CONNMAN_ELEMENT_STATE_UNKNOWN;
 564         element->error   = CONNMAN_ELEMENT_ERROR_UNKNOWN;
 565         element->index   = -1;
 566         element->enabled = FALSE;
 567
 568         element->children = g_hash_table_new_full(g_str_hash, g_str_equal,
 569                                                 NULL, unregister_child);
 570
 571         element->properties = g_hash_table_new_full(g_str_hash, g_str_equal,
 572                                                 g_free, unregister_property);
 573 }
 574
 575 /**
 576  * connman_element_create:
 577  * @name: element name
 578  *
 579  * Allocate a new element and assign the given #name to it. If the name
 580  * is #NULL, it will be later on created based on the element type.
 581  *
 582  * Returns: a newly-allocated #connman_element structure
 583  */
 584 struct connman_element *connman_element_create(const char *name)
 585 {
 586         struct connman_element *element;
 587
 588         element = g_try_new0(struct connman_element, 1);
 589         if (element == NULL)
 590                 return NULL;
 591
 592         DBG("element %p", element);
 593
 594         __connman_element_initialize(element);
 595
 596         return element;
 597 }
 598
 599 struct connman_element *connman_element_ref(struct connman_element *element)
 600 {
 601         DBG("element %p name %s refcount %d", element, element->name,
 602                                 g_atomic_int_get(&element->refcount) + 1);
 603
 604         g_atomic_int_inc(&element->refcount);
 605
 606         return element;
 607 }
 608
 609 static void free_properties(struct connman_element *element)
 610 {
 611         DBG("element %p name %s", element, element->name);
 612
 613         g_hash_table_destroy(element->properties);
 614         element->properties = NULL;
 615 }
 616
 617 static void free_children(struct connman_element *element)
 618 {
 619         DBG("element %p name %s", element, element->name);
 620
 621         g_hash_table_destroy(element->children);
 622         element->children = NULL;
 623 }
 624
 625 void connman_element_unref(struct connman_element *element)
 626 {
 627         DBG("element %p name %s refcount %d", element, element->name,
 628                                 g_atomic_int_get(&element->refcount) - 1);
 629
 630         if (g_atomic_int_dec_and_test(&element->refcount) == TRUE) {
 631                 if (element->destruct)
 632                         element->destruct(element);
 633                 free_children(element);
 634                 free_properties(element);
 635                 g_free(element->hostname);
 636                 g_free(element->domainname);
 637                 g_free(element->ipv4.address);
 638                 g_free(element->ipv4.netmask);
 639                 g_free(element->ipv4.gateway);
 640                 g_free(element->ipv4.network);
 641                 g_free(element->ipv4.broadcast);
 642                 g_free(element->ipv4.nameserver);
 643                 g_free(element->ipv4.timeserver);
 644                 g_free(element->ipv4.pac);
 645                 g_free(element->ipv6.address);
 646                 g_free(element->ipv6.network);
 647                 g_free(element->devname);
 648                 g_free(element->path);
 649                 g_free(element->name);
 650                 g_free(element);
 651         }
 652 }
 653
 654 static int set_static_property(struct connman_element *element,
 655                                 const char *name, int type, const void *value)
 656 {
 657         struct connman_property *property;
 658
 659         DBG("element %p name %s", element, element->name);
 660
 661         if (type != DBUS_TYPE_STRING && type != DBUS_TYPE_BYTE)
 662                 return -EINVAL;
 663
 664         property = g_try_new0(struct connman_property, 1);
 665         if (property == NULL)
 666                 return -ENOMEM;
 667
 668         property->id   = CONNMAN_PROPERTY_ID_INVALID;
 669         property->type = type;
 670
 671         DBG("name %s type %d value %p", name, type, value);
 672
 673         switch (type) {
 674         case DBUS_TYPE_STRING:
 675                 property->value = g_strdup(*((const char **) value));
 676                 break;
 677         case DBUS_TYPE_BOOLEAN:
 678         case DBUS_TYPE_BYTE:
 679                 property->value = g_try_malloc(1);
 680                 if (property->value != NULL)
 681                         memcpy(property->value, value, 1);
 682                 break;
 683         }
 684
 685         g_hash_table_replace(element->properties, g_strdup(name), property);
 686
 687         return 0;
 688 }
 689
 690 static int set_static_array_property(struct connman_element *element,
 691                         const char *name, int type, const void *value, int len)
 692 {
 693         struct connman_property *property;
 694
 695         DBG("element %p name %s", element, element->name);
 696
 697         if (type != DBUS_TYPE_BYTE)
 698                 return -EINVAL;
 699
 700         property = g_try_new0(struct connman_property, 1);
 701         if (property == NULL)
 702                 return -ENOMEM;
 703
 704         property->id      = CONNMAN_PROPERTY_ID_INVALID;
 705         property->type    = DBUS_TYPE_ARRAY;
 706         property->subtype = type;
 707
 708         DBG("name %s type %d value %p", name, type, value);
 709
 710         switch (type) {
 711         case DBUS_TYPE_BYTE:
 712                 property->value = g_try_malloc(len);
 713                 if (property->value != NULL) {
 714                         memcpy(property->value,
 715                                 *((const unsigned char **) value), len);
 716                         property->size = len;
 717                 }
 718                 break;
 719         }
 720
 721         g_hash_table_replace(element->properties, g_strdup(name), property);
 722
 723         return 0;
 724 }
 725
 726 int connman_element_get_value(struct connman_element *element,
 727                                 enum connman_property_id id, void *value)
 728 {
 729         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
 730                 return -EINVAL;
 731
 732         switch (id) {
 733         case CONNMAN_PROPERTY_ID_HOSTNAME:
 734                 if (element->hostname == NULL)
 735                         return connman_element_get_value(element->parent,
 736                                                                 id, value);
 737                 *((char **) value) = element->hostname;
 738                 break;
 739         case CONNMAN_PROPERTY_ID_DOMAINNAME:
 740                 if (element->domainname == NULL)
 741                         return connman_element_get_value(element->parent,
 742                                                                 id, value);
 743                 *((char **) value) = element->domainname;
 744                 break;
 745         case CONNMAN_PROPERTY_ID_IPV4_METHOD:
 746                 if (element->ipv4.method == CONNMAN_IPCONFIG_METHOD_UNKNOWN)
 747                         return connman_element_get_value(element->parent,
 748                                                                 id, value);
 749                 *((const char **) value) = __connman_ipconfig_method2string(element->ipv4.method);
 750                 break;
 751         case CONNMAN_PROPERTY_ID_IPV4_ADDRESS:
 752                 if (element->ipv4.address == NULL)
 753                         return connman_element_get_value(element->parent,
 754                                                                 id, value);
 755                 *((char **) value) = element->ipv4.address;
 756                 break;
 757         case CONNMAN_PROPERTY_ID_IPV4_PEER:
 758                 if (element->ipv4.peer == NULL)
 759                         return connman_element_get_value(element->parent,
 760                                                                 id, value);
 761                 *((char **) value) = element->ipv4.peer;
 762                 break;
 763         case CONNMAN_PROPERTY_ID_IPV4_NETMASK:
 764                 if (element->ipv4.netmask == NULL)
 765                         return connman_element_get_value(element->parent,
 766                                                                 id, value);
 767                 *((char **) value) = element->ipv4.netmask;
 768                 break;
 769         case CONNMAN_PROPERTY_ID_IPV4_GATEWAY:
 770                 if (element->ipv4.gateway == NULL)
 771                         return connman_element_get_value(element->parent,
 772                                                                 id, value);
 773                 *((char **) value) = element->ipv4.gateway;
 774                 break;
 775         case CONNMAN_PROPERTY_ID_IPV4_BROADCAST:
 776                 if (element->ipv4.broadcast == NULL)
 777                         return connman_element_get_value(element->parent,
 778                                                                 id, value);
 779                 *((char **) value) = element->ipv4.broadcast;
 780                 break;
 781         case CONNMAN_PROPERTY_ID_IPV4_NAMESERVER:
 782                 if (element->ipv4.nameserver == NULL)
 783                         return connman_element_get_value(element->parent,
 784                                                                 id, value);
 785                 *((char **) value) = element->ipv4.nameserver;
 786                 break;
 787         case CONNMAN_PROPERTY_ID_IPV4_TIMESERVER:
 788                 if (element->ipv4.timeserver == NULL)
 789                         return connman_element_get_value(element->parent,
 790                                                                 id, value);
 791                 *((char **) value) = element->ipv4.timeserver;
 792                 break;
 793         case CONNMAN_PROPERTY_ID_IPV4_PAC:
 794                 if (element->ipv4.pac == NULL)
 795                         return connman_element_get_value(element->parent,
 796                                                                 id, value);
 797                 *((char **) value) = element->ipv4.pac;
 798                 break;
 799         case CONNMAN_PROPERTY_ID_IPV6_GATEWAY:
 800                 if (element->ipv6.gateway == NULL)
 801                         return connman_element_get_value(element->parent,
 802                                                                 id, value);
 803                 *((char **) value) = element->ipv6.gateway;
 804                 break;
 805
 806         default:
 807                 return -EINVAL;
 808         }
 809
 810         return 0;
 811 }
 812
 813 static gboolean get_static_property(struct connman_element *element,
 814                                                 const char *name, void *value)
 815 {
 816         struct connman_property *property;
 817         gboolean found = FALSE;
 818
 819         DBG("element %p name %s", element, element->name);
 820
 821         property = g_hash_table_lookup(element->properties, name);
 822         if (property != NULL) {
 823                 switch (property->type) {
 824                 case DBUS_TYPE_STRING:
 825                         *((char **) value) = property->value;
 826                         found = TRUE;
 827                         break;
 828                 case DBUS_TYPE_BOOLEAN:
 829                 case DBUS_TYPE_BYTE:
 830                         memcpy(value, property->value, 1);
 831                         found = TRUE;
 832                         break;
 833                 }
 834         }
 835
 836         if (found == FALSE && element->parent != NULL)
 837                 return get_static_property(element->parent, name, value);
 838
 839         return found;
 840 }
 841
 842 static gboolean get_static_array_property(struct connman_element *element,
 843                         const char *name, void *value, unsigned int *len)
 844 {
 845         struct connman_property *property;
 846         gboolean found = FALSE;
 847
 848         DBG("element %p name %s", element, element->name);
 849
 850         property = g_hash_table_lookup(element->properties, name);
 851         if (property != NULL) {
 852                 *((void **) value) = property->value;
 853                 *len = property->size;
 854                 found = TRUE;
 855         }
 856
 857         return found;
 858 }
 859
 860 /**
 861  * connman_element_set_string:
 862  * @element: element structure
 863  * @key: unique identifier
 864  * @value: string value
 865  *
 866  * Set string value for specific key
 867  */
 868 int connman_element_set_string(struct connman_element *element,
 869                                         const char *key, const char *value)
 870 {
 871         return set_static_property(element, key, DBUS_TYPE_STRING, &value);
 872 }
 873
 874 /**
 875  * connman_element_get_string:
 876  * @element: element structure
 877  * @key: unique identifier
 878  *
 879  * Get string value for specific key
 880  */
 881 const char *connman_element_get_string(struct connman_element *element,
 882                                                         const char *key)
 883 {
 884         const char *value;
 885
 886         if (get_static_property(element, key, &value) == FALSE)
 887                 return NULL;
 888
 889         return value;
 890 }
 891
 892 /**
 893  * connman_element_set_bool:
 894  * @element: element structure
 895  * @key: unique identifier
 896  * @value: boolean value
 897  *
 898  * Set boolean value for specific key
 899  */
 900 int connman_element_set_bool(struct connman_element *element,
 901                                         const char *key, connman_bool_t value)
 902 {
 903         return set_static_property(element, key, DBUS_TYPE_BOOLEAN, &value);
 904 }
 905
 906 /**
 907  * connman_element_get_bool:
 908  * @element: element structure
 909  * @key: unique identifier
 910  *
 911  * Get boolean value for specific key
 912  */
 913 connman_bool_t connman_element_get_bool(struct connman_element *element,
 914                                                         const char *key)
 915 {
 916         connman_bool_t value;
 917
 918         if (get_static_property(element, key, &value) == FALSE)
 919                 return FALSE;
 920
 921         return value;
 922 }
 923
 924 /**
 925  * connman_element_set_uint8:
 926  * @element: element structure
 927  * @key: unique identifier
 928  * @value: integer value
 929  *
 930  * Set integer value for specific key
 931  */
 932 int connman_element_set_uint8(struct connman_element *element,
 933                                         const char *key, connman_uint8_t value)
 934 {
 935         return set_static_property(element, key, DBUS_TYPE_BYTE, &value);
 936 }
 937
 938 /**
 939  * connman_element_get_uint8:
 940  * @element: element structure
 941  * @key: unique identifier
 942  *
 943  * Get integer value for specific key
 944  */
 945 connman_uint8_t connman_element_get_uint8(struct connman_element *element,
 946                                                         const char *key)
 947 {
 948         connman_uint8_t value;
 949
 950         if (get_static_property(element, key, &value) == FALSE)
 951                 return 0;
 952
 953         return value;
 954 }
 955
 956 /**
 957  * connman_element_set_blob:
 958  * @element: element structure
 959  * @key: unique identifier
 960  * @data: blob data
 961  * @size: blob size
 962  *
 963  * Set binary blob value for specific key
 964  */
 965 int connman_element_set_blob(struct connman_element *element,
 966                         const char *key, const void *data, unsigned int size)
 967 {
 968         return set_static_array_property(element, key,
 969                                                 DBUS_TYPE_BYTE, &data, size);
 970 }
 971
 972 /**
 973  * connman_element_get_blob:
 974  * @element: element structure
 975  * @key: unique identifier
 976  * @size: pointer to blob size
 977  *
 978  * Get binary blob value for specific key
 979  */
 980 const void *connman_element_get_blob(struct connman_element *element,
 981                                         const char *key, unsigned int *size)
 982 {
 983         void *value;
 984
 985         if (get_static_array_property(element, key, &value, size) == FALSE)
 986                 return NULL;
 987
 988         return value;
 989 }
 990
 991 static void probe_element(struct connman_element *element)
 992 {
 993         GSList *list;
 994
 995         DBG("element %p name %s", element, element->name);
 996
 997         for (list = driver_list; list; list = list->next) {
 998                 struct connman_driver *driver = list->data;
 999
1000                 if (match_driver(element, driver) == FALSE)
1001                         continue;
1002
1003                 DBG("driver %p name %s", driver, driver->name);
1004
1005                 if (driver->probe(element) == 0) {
1006                         element->driver = driver;
1007                         break;
1008                 }
1009         }
1010 }
1011
1012 static void register_element(gpointer data, gpointer user_data)
1013 {
1014         struct connman_element *element = data;
1015         const gchar *basepath;
1016         GNode *node;
1017
1018         if (element->parent) {
1019                 node = g_node_find(element_root, G_PRE_ORDER,
1020                                         G_TRAVERSE_ALL, element->parent);
1021                 basepath = element->parent->path;
1022         } else {
1023                 element->parent = element_root->data;
1024
1025                 node = element_root;
1026                 basepath = CONNMAN_PATH "/device";
1027         }
1028
1029         element->path = g_strdup_printf("%s/%s", basepath, element->name);
1030
1031         if (node == NULL) {
1032                 connman_error("Element registration for %s failed",
1033                                                         element->path);
1034                 return;
1035         }
1036
1037         DBG("element %p path %s", element, element->path);
1038
1039         g_node_append_data(node, element);
1040
1041         if (started == FALSE)
1042                 return;
1043
1044         probe_element(element);
1045 }
1046
1047 gboolean __connman_element_device_isfiltered(const char *devname)
1048 {
1049         char **pattern;
1050
1051         if (device_filter == NULL)
1052                 goto nodevice;
1053
1054         for (pattern = device_filter; *pattern; pattern++) {
1055                 if (g_pattern_match_simple(*pattern, devname) == FALSE) {
1056                         DBG("ignoring device %s (match)", devname);
1057                         return TRUE;
1058                 }
1059         }
1060
1061 nodevice:
1062         if (nodevice_filter == NULL)
1063                 return FALSE;
1064
1065         for (pattern = nodevice_filter; *pattern; pattern++) {
1066                 if (g_pattern_match_simple(*pattern, devname) == TRUE) {
1067                         DBG("ignoring device %s (no match)", devname);
1068                         return TRUE;
1069                 }
1070         }
1071
1072         return FALSE;
1073 }
1074
1075 /**
1076  * connman_element_register:
1077  * @element: the element to register
1078  * @parent: the parent to register the element with
1079  *
1080  * Register an element with the core. It will be register under the given
1081  * parent of if %NULL is provided under the root element.
1082  *
1083  * Returns: %0 on success
1084  */
1085 int connman_element_register(struct connman_element *element,
1086                                         struct connman_element *parent)
1087 {
1088         DBG("element %p name %s parent %p", element, element->name, parent);
1089
1090         if (element->devname == NULL)
1091                 element->devname = g_strdup(element->name);
1092
1093         if (element->type != CONNMAN_ELEMENT_TYPE_DEVICE)
1094                 goto setup;
1095
1096         if (__connman_element_device_isfiltered(element->devname) == TRUE)
1097                 return -EPERM;
1098
1099 setup:
1100         if (connman_element_ref(element) == NULL)
1101                 return -EINVAL;
1102
1103         if (element->name == NULL) {
1104                 element->name = g_strdup(type2string(element->type));
1105                 if (element->name == NULL) {
1106                         return -EINVAL;
1107                 }
1108         }
1109
1110         if (element->type == CONNMAN_ELEMENT_TYPE_DHCP)
1111                 element->ipv4.method = CONNMAN_IPCONFIG_METHOD_DHCP;
1112
1113         element->parent = parent;
1114
1115         register_element(element, NULL);
1116
1117         return 0;
1118 }
1119
1120 static gboolean remove_element(GNode *node, gpointer user_data)
1121 {
1122         struct connman_element *element = node->data;
1123         struct connman_element *root = user_data;
1124
1125         DBG("element %p name %s", element, element->name);
1126
1127         if (element == root)
1128                 return FALSE;
1129
1130         g_node_unlink(node);
1131
1132         if (element->driver) {
1133                 if (element->driver->remove)
1134                         element->driver->remove(element);
1135
1136                 element->driver = NULL;
1137         }
1138
1139         g_node_destroy(node);
1140
1141         connman_element_unref(element);
1142
1143         return FALSE;
1144 }
1145
1146 struct unregister_type {
1147         struct connman_element *root;
1148         enum connman_element_type type;
1149 };
1150
1151 static gboolean remove_element_type(GNode *node, gpointer user_data)
1152 {
1153         struct unregister_type *children_type = user_data;
1154         struct connman_element *root = children_type->root;
1155         struct connman_element *element = node->data;
1156         enum connman_element_type type = children_type->type;
1157
1158         DBG("element %p name %s", element, element->name);
1159
1160         if (element == root)
1161                 return FALSE;
1162
1163         if(element->type != type)
1164                 return FALSE;
1165
1166         g_node_unlink(node);
1167
1168         if (element->driver) {
1169                 if (element->driver->remove)
1170                         element->driver->remove(element);
1171
1172                 element->driver = NULL;
1173         }
1174
1175         g_node_destroy(node);
1176
1177         connman_element_unref(element);
1178
1179         return FALSE;
1180 }
1181
1182
1183 void connman_element_unregister(struct connman_element *element)
1184 {
1185         GNode *node;
1186
1187         DBG("element %p name %s", element, element->name);
1188
1189         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1190
1191         if (node != NULL)
1192                 g_node_traverse(node, G_POST_ORDER,
1193                                 G_TRAVERSE_ALL, -1, remove_element, NULL);
1194 }
1195
1196 void connman_element_unregister_children(struct connman_element *element)
1197 {
1198         GNode *node;
1199
1200         DBG("element %p name %s", element, element->name);
1201
1202         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1203
1204         if (node != NULL)
1205                 g_node_traverse(node, G_POST_ORDER,
1206                                 G_TRAVERSE_ALL, -1, remove_element, element);
1207 }
1208
1209 void connman_element_unregister_children_type(struct connman_element *element, enum connman_element_type type)
1210 {
1211         GNode *node;
1212
1213         DBG("element %p name %s", element, element->name);
1214
1215         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1216
1217         if (node != NULL) {
1218                 struct unregister_type children_type;
1219
1220                 children_type.root = element;
1221                 children_type.type = type;
1222                 g_node_traverse(node, G_POST_ORDER,
1223                                 G_TRAVERSE_ALL, -1, remove_element_type, &children_type);
1224         }
1225 }
1226
1227
1228 static gboolean update_element(GNode *node, gpointer user_data)
1229 {
1230         struct connman_element *element = node->data;
1231
1232         DBG("element %p name %s", element, element->name);
1233
1234         if (element->driver && element->driver->update)
1235                 element->driver->update(element);
1236
1237         return FALSE;
1238 }
1239
1240 void connman_element_update(struct connman_element *element)
1241 {
1242         GNode *node;
1243
1244         DBG("element %p name %s", element, element->name);
1245
1246         node = g_node_find(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, element);
1247
1248         if (node != NULL)
1249                 g_node_traverse(node, G_PRE_ORDER,
1250                                 G_TRAVERSE_ALL, -1, update_element, element);
1251 }
1252
1253 int connman_element_set_enabled(struct connman_element *element,
1254                                                         gboolean enabled)
1255 {
1256         if (element->enabled == enabled)
1257                 return 0;
1258
1259         element->enabled = enabled;
1260
1261         connman_element_update(element);
1262
1263         return 0;
1264 }
1265
1266 static enum connman_service_error convert_error(enum connman_element_error error)
1267 {
1268         switch (error) {
1269         case CONNMAN_ELEMENT_ERROR_UNKNOWN:
1270         case CONNMAN_ELEMENT_ERROR_FAILED:
1271                 break;
1272         case CONNMAN_ELEMENT_ERROR_DHCP_FAILED:
1273                 return CONNMAN_SERVICE_ERROR_DHCP_FAILED;
1274         case CONNMAN_ELEMENT_ERROR_CONNECT_FAILED:
1275                 return CONNMAN_SERVICE_ERROR_CONNECT_FAILED;
1276         }
1277
1278         return CONNMAN_SERVICE_ERROR_UNKNOWN;
1279 }
1280
1281 /**
1282  * connman_element_set_error:
1283  * @element: element structure
1284  * @error: error identifier
1285  *
1286  * Set error state and specific error identifier
1287  */
1288 void connman_element_set_error(struct connman_element *element,
1289                                         enum connman_element_error error)
1290 {
1291         struct connman_service *service;
1292
1293         DBG("element %p error %d", element, error);
1294
1295         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
1296                 return;
1297
1298         element->state = CONNMAN_ELEMENT_STATE_ERROR;
1299         element->error = error;
1300
1301         if (element->driver && element->driver->change)
1302                 element->driver->change(element);
1303
1304         service = __connman_element_get_service(element);
1305         __connman_service_indicate_error(service, convert_error(error));
1306 }
1307
1308 void __connman_element_set_driver(struct connman_element *element)
1309 {
1310         GSList *list;
1311
1312         DBG("element %p name %s driver %p", element, element->name,
1313                                                 element->driver);
1314
1315         if (element->driver)
1316                 return;
1317
1318         for (list = driver_list; list; list = list->next) {
1319                 struct connman_driver *driver = list->data;
1320
1321                 if (match_driver(element, driver) == FALSE)
1322                         continue;
1323
1324                 element->driver = driver;
1325
1326                 break;
1327         }
1328 }
1329
1330 int __connman_element_init(const char *device, const char *nodevice)
1331 {
1332         struct connman_element *element;
1333
1334         DBG("");
1335
1336         connection = connman_dbus_get_connection();
1337         if (connection == NULL)
1338                 return -EIO;
1339
1340         if (device)
1341                 device_filter = g_strsplit(device, ",", -1);
1342
1343         if (nodevice)
1344                 nodevice_filter = g_strsplit(nodevice, ",", -1);
1345
1346         element = connman_element_create("root");
1347
1348         element->path = g_strdup("/");
1349         element->type = CONNMAN_ELEMENT_TYPE_ROOT;
1350
1351         element_root = g_node_new(element);
1352
1353         __connman_technology_init();
1354         __connman_notifier_init();
1355         __connman_location_init();
1356         __connman_service_init();
1357         __connman_provider_init();
1358         __connman_network_init();
1359         __connman_device_init();
1360
1361         return 0;
1362 }
1363
1364 static gboolean probe_node(GNode *node, gpointer data)
1365 {
1366         struct connman_element *element = node->data;
1367
1368         DBG("element %p name %s", element, element->name);
1369
1370         if (element->type == CONNMAN_ELEMENT_TYPE_ROOT)
1371                 return FALSE;
1372
1373         if (element->driver)
1374                 return FALSE;
1375
1376         probe_element(element);
1377
1378         return FALSE;
1379 }
1380
1381 void __connman_element_start(void)
1382 {
1383         DBG("");
1384
1385         __connman_storage_init_profile();
1386
1387         g_node_traverse(element_root, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
1388                                                         probe_node, NULL);
1389
1390         started = TRUE;
1391
1392         __connman_rtnl_start();
1393
1394         __connman_connection_init();
1395         __connman_ipv4_init();
1396         __connman_dhcp_init();
1397         __connman_wpad_init();
1398         __connman_wispr_init();
1399
1400         __connman_rfkill_init();
1401 }
1402
1403 void __connman_element_stop(void)
1404 {
1405         DBG("");
1406
1407         __connman_rfkill_cleanup();
1408
1409         __connman_wispr_cleanup();
1410         __connman_wpad_cleanup();
1411         __connman_dhcp_cleanup();
1412         __connman_ipv4_cleanup();
1413         __connman_provider_cleanup();
1414         __connman_connection_cleanup();
1415 }
1416
1417 static gboolean free_driver(GNode *node, gpointer data)
1418 {
1419         struct connman_element *element = node->data;
1420
1421         DBG("element %p name %s", element, element->name);
1422
1423         if (element->driver) {
1424                 if (element->driver->remove)
1425                         element->driver->remove(element);
1426
1427                 element->driver = NULL;
1428         }
1429
1430         return FALSE;
1431 }
1432
1433 static gboolean free_node(GNode *node, gpointer data)
1434 {
1435         struct connman_element *element = node->data;
1436
1437         DBG("element %p name %s", element, element->name);
1438
1439         if (g_node_depth(node) > 1)
1440                 connman_element_unregister(element);
1441
1442         return FALSE;
1443 }
1444
1445 void __connman_element_cleanup(void)
1446 {
1447         DBG("");
1448
1449         __connman_device_cleanup();
1450         __connman_network_cleanup();
1451         __connman_service_cleanup();
1452         __connman_location_cleanup();
1453         __connman_notifier_cleanup();
1454         __connman_technology_cleanup();
1455
1456         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1457                                                         free_driver, NULL);
1458
1459         g_node_traverse(element_root, G_POST_ORDER, G_TRAVERSE_ALL, -1,
1460                                                         free_node, NULL);
1461
1462         g_node_destroy(element_root);
1463         element_root = NULL;
1464
1465         g_strfreev(nodevice_filter);
1466         g_strfreev(device_filter);
1467
1468         if (connection == NULL)
1469                 return;
1470
1471         dbus_connection_unref(connection);
1472 }